Valve.



Ng. 640,6l5. Patented 1an. 2, |900. A. Bohm-2N.

VALVE.

(Application Bled Aug. .17, 1898.)

`(No Modal.)

III

W A @Www/wl' UNITED STATES PATENT OFFICE.

ALBERT BORDEN, OF

ST. LOUIS, MISSOURI.

VALVE.

SPECIFICATION forming part of Letters Patent No. 640,615, dated January2, 1900.

Application filed August 17, 1898.

To all whom it mty concern:

Be it known that I, ALBERT BoRDEN, of the city of St. Louis, State ofMissouri, have invented certain new and useful Improvements in Valves,of which ihe following is a full, clear, and exact description,reference being had to the accompanying drawings, forming a part hereof.

My invention relates to valves; and it consists of the novelconstruction, combination, and arrangement of parts hereinafter shown,described, and claimed.

Figure 1 is an elevation of a valve ot my improved construction. Fig. 2is a vertical sectional view taken approximately on the line 2 2 ofFig. 1. Fig. 3 is a transverse sectional view taken approximately on theline 3 3 of Fig. 2. Fig. 4 is a transverse sectional View takenapproximately on the line 4 4 of Fig. 2.

In the construction of my improved valve I make use of a valve-casing l,a piston-cylinder 2, and a spring-casing 3, said springcasing 3surmounting the piston-cylinder 2, which piston-cylinder is carried bythe upper end of the valve-casing 1.

The valve-casing l1 is in the form of a hollow cylinder having an opentop and closed bottom, and tapped into one side of the lower end of saidcylinder is a tubular connection 4 and tapped into said cylinder 1,adjacent the upper end thereof and on the opposite side from saidtubular connection 4, is a tubular connection 5. Formed integral withthe interior of the cylinder 1, between the connections 4 and 5, is aninwardly-projectin g flange 6, in the top of which is formed a beveledValve-seat 7. Adapted to engage upon this valve-seat 7 is a disk valve8, the same being provided with a beveled lower edge 9, and formedintegral with said valve and projecting downwardly through thevalve-opening in the lange 6 are the rectangularly-arran ged wings 10.

The upper end of the cylinder, comprising the valve-casing 1, is interiorly screw-threaded and adapted to receive theexteriorlyscrew-threaded lower end 11 of the piston-cylinder 2, therebeing suitable packing 12 arranged between said lower end l1 and theupper end of the casing 1. Passing vertically through the lower end ofthe piston- Serial No. 688,835. (No model.)

cylinder 2 is a vertical bore or passage 13, through which operates aconnecting-rod 14, there beingasuitable stuihng-box 15 located in thelower end 11, said stuffing-box 15 being for the purpose ot packing thisconnectingrod 14. The lower end of the connecting-rod 14 is providedwith a head 16, that engages in a recess 17, formed in the top of thevalve 3, while the upper end of said connecting-rod 14 is seated in apiston 1S, the periphery of which piston is suitably packed, asindicated by 19, and said piston being arranged for vertical movement inthe piston-cylinder 2.

Formed on or fixed to the upper end of the piston-cylinder 2 is thespring-casing 3, the same being somewhat smaller in diameter than is thecasing 1 and cylinder 2, and said casing 3 is provided at its lower endwith the inwardly-projecting shoulder 20, on the top of which is locateda packing-ring 21. Oppositely-arranged spring-cups 22 are arranged forvertical movement in the spring-casing 3, between which cups 22 islocated an eXpansive coil-spring 23, and formed in the centers of eachof the spring-cups 22 are the apertures 24, through which aperturespasses the rod 25, the lower end of which is screw-seated in the top ofthe piston 18. This rod 25 is screw-threaded, and adjusting-nuts 26 arelocated upon said rod above and below the spring-cups 22, said nutsengaging against lugs 27, formed integral with the faces of said spring-cu ps,ad j acent the apertures 24 therein.

Formed on or xed to the upper end of the spring-casing 3 is a cap 28,into the upper end of which leads a tubular connection 29, there being alike tubular connection 30 tapped into the lower end of thepiston-cylinder 2.

The operation ot my improved valve is as follows: Assuming that thevalve is open, as illustrated in Fig. 2, it is clearly seen that anyfluid will readily pass in either direction through the tubularconnections 4 and 5, through the valve-opening, from the seat at the topof which the valve 8 is elevated. When it is desired to close the valveto cut oi the passage through the valve-casing 1, the compressed air,water, or other fluid under pressure that is utilized to operate thevalve is allowed to enter through the connection 29, from whence it willpass into the cap IOO 28, from thence downwardly through the apertures24 in the spring-cups, through the lower portion of the spring-casing 3,and onto the top of the-piston 18. The pressure of the air, water, orother iiuid will cause the piston 18 to move to the lower end of thepistoncylinder 2, and as this movement takes place the connecting-rod 14is lowered, and by so doing the valve 8 is forced onto the valveseat 7,thereby tightly closing the passage through the valve-casing 1. Duringthis operation of closing the valve it is essential that the tubularconnection 30 be given vent, in order that any air or liquid that hasbeen within the lower portion of the piston-cylinder 2, beneath thepiston, will readily discharge. To open the valve after it has once beenclosed, air, water, or other iiuid under pressure enters through thetubular connection 30, beneath the piston 18, which action willnecessarily elevate said piston and contiguous parts, which opens thevalve, and during this last-mentioned operation the tubular connection29 must act as a vent or discharge pipe for the fluid that has heenabove the piston.

By providing the spring 25 and the rod 25 with the adj listing-nutsthereon the valve is prevented from operating too quickly in bothdirections, which quick action might result in breakage or excessivewear of the parts of the valve. Where the iiuid under pressure is turnedon quickly to open or close the valve and the piston 18 is suddenlyraised or lowered, the adjusting-nuts 26 upon the rod 25 will strikeagainst the lugs 27 on the springcups 22, and the spring will beslightly compressed, thus breaking the sudden impact resulting from thequick movement of the piston 18.

A valve of my improved construction may be used for a great number ofpurposes and possesses superior advantages in point of simplicity,durability, and general efficiency.

I claim- 1. In a valve, the cylindrical valve-casing l, the disk valve 9closing the passage through said casing, the piston-cylinder 2surmounting said casin g, the piston 18 operating within said cylinder,the rod 14 connecting the piston with the disk valve, means wherebyfluid under pressure is introduced above and loelow the piston, andmeans connected to the piston whereby the impact of the disk valveresulting from the sudden movement of the piston is broken in bothdirections, substantially as specified,

2. In a valve of the class described, avalvecasing 1, the disk valve 8closing the passage through said casing, the piston-cylinder surmountingthe valve-casing, the piston 18 operating Within said cylinder, a rigidconnecting-rod 14C between the piston and the disk valve, aspring-casing' 3 surmounting the piston-cylinder, the spring-cups 22arranged for vertical movement within the spring-casing, lugs 27integral with the eXterior faces of said spring-cups, an expansivecoil-spring located between said spring-cups, the connecting-rod 25 fromthe piston, the same passing through said spring-cups, theadjusting-nuts 27 located upon said rod outside of said cups, the cap 28surmonntin g the spring-casing, and means whereby duid under pressure isintroduced above and `below the piston, substantially as specied.

In testimony whereof I affix my signature in presence of two Witnesses.

ALBERT BORDEN.

Witnesses: v

M. P. SMITH, JOHN C. HIGDON.

